MultiDexLegacy minsdk bump from 8 to 21
MultiDexLegacy minsdk bump from 9 to 21

Bug: 340711546
Change-Id: I4ba5be952dc629cad2288727d9197fe505ddf76e
Merged-In: I3525c27e0f0121e66c4f579aef5cba1999ffdacd
Test: Treehugger
12 files changed